The Soviet Invasion of Poland Add-on for Pixel Puzzles World War II Jigsaws has 8 achievements.
Complete Pack: Soviet Invasion of Poland
Complete Puzzle: Russian and German officers discuss partition plans
Complete Puzzle: Soviet forces enter Wilno
Complete Puzzle: Polish soldiers escape into Romania
Complete Puzzle: Soviet soldiers with disgruntled Polish children
Complete Puzzle: Red Army soldiers handing out propaganda flyers
Complete Puzzle: Crashed Polish PWS-26 trainer aircraft
Complete Puzzle: BA-I armoured car in Brest-Litovsk